Reality is not as obvious and simple as we like to think. Some of the things that we accept as true at face value are notoriously wrong. Scientists and philosophers have made every effort to change our common perceptions of it. The 10 examples below will show you what I mean.

1. Great glaciation.
Great glaciation is the theory of the final state that our universe is heading toward. The universe has a limited supply of energy. According to this theory, when that energy finally runs out, the universe will devolve into a frozen state. Heat energy produced by the motion of the particles, heat loss, a natural law of the universe, means that eventually this particle motion will slow down and, presumably, one day everything will stop.